线粒体功能障碍的生物标志物甲基马龙酸与表型衰老加速之间的关联:基于人口的研究
1School of Psychology and Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing, 400715, China.
Archives of gerontology and geriatrics
|September 15, 2023
概括
循环甲基马龙酸 (MMA) 是线粒体功能障碍的标志物,与更快的生物衰老 (表型衰老加速) 有关. 即使考虑到一般人群中的维生素B12和功能,这种关联仍然存在.
科学领域:
- 生物化学 生物化学
- 老年学是一门学科.
- 代谢学 代谢学 代谢学
背景情况:
- 现型衰老加速 (PAA) 是生物衰老的一个敏感指标.
- 循环甲基马龙酸 (MMA) 是线粒体功能障碍的新型生物标志物,与与年龄相关的疾病有关.
研究的目的:
- 调查循环MMA和PAA之间的关联.
- 确定这种关联是否独立于维生素B12状态和功能.
主要方法:
- 对13 023名美国国家健康和营养检查调查 (NHANES) 参与者的横截面分析.
- 使用已公布的算法计算PAA.
- 用于评估MMA和PAA关联的线性回归模型,对混因素进行调整.
主要成果:
- 年龄,性别和其他因素仅解释了MMA水平变化的31%.
- 每增加1.0nmol/L的MMA与1.59年增加的PAA有关 (p < 0.001).
- 在调整维生素B12,肌酸蛋白和同类蛋白水平后,这种关联仍然显著,并且在老年人,女性和患有心血管疾病的人群中更强烈.
结论:
- 线粒体衍生MMA与一般人群的表型衰老加速增加有关.
- 这种联系独立于关键的营养和功能标志物.
- MMA可能成为加速衰老和相关健康风险的潜在生物标志物.
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